c# 导出数据

时间：2016-05-18 12:26:21 阅读：286 评论：0 收藏：0 [点我收藏+]

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页面代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="SaleslDailyReport.aspx.cs" Inherits="DataReport.OilDistribution.SaleslDailyReport" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml">

</head>

<body>

<div>

<tr>

<td>

</td>

</td>

</tr> </table>

<div field="Alias" width="120" headeralign="center" allowsort="true" align="center"> 单位

</div>

</div>

</div>

</div>

</form>

</body>

</html>

var grid = mini.get("datagrid1");

//下载导出数据

function down() {

var time = mini.get("txtCreTime").getFormValue();

var url = bootPATH + "../OilDistribution/AjaxReport.ashx?method=ExportExcel&time=" + time;

var exportIFrame = document.getElementById("exportIFrame");

exportIFrame.src = url;

}

</script>

一般处理程序代码

protected override object processQuery(HttpContext context, out bool hasError)
        {
            hasError = false;
            string method = context.Request["method"];
            switch (method)
            {

case "ExportExcel": //下载（销售日报导出）
return ExportDataToExcel(context, out hasError);

}
}

#region 下载

/// <summary>

/// 下载（导出销售日报）

/// </summary>

/// <param name="context"></param>

/// <param name="hasError"></param>

/// <returns></returns>

private object ExportDataToExcel(HttpContext context, out bool hasError)

{

string result = "";

hasError = false;

try {

ReportState32BLL sbll = new ReportState32BLL();

string time = context.Request["time"];

//获得要导出的数据信息（销售日报）

DataTable data = sbll.GetSaleslDailyTable(time);

if (data != null)

{

string fileName = "销售日报(" + DateTime.Now.ToString("yyyyMMddhhmmss") + ").xlsx";

string[] columnName = { "序号", "单位", "小计", "汽油", "柴油", "煤油", "小计", "汽油", "柴油", "月累计煤油", "小计", "汽油", "柴油", "煤油" };

string tempDir = context.Server.MapPath("~/DownLoadFiles/");

//临时存放目录

string tempXls = string.Format("{0}{1}", tempDir, fileName);

SaveFile(data, fileName, tempDir, columnName);

ExportToExcel(context, tempXls);

result = "导出成功";

}

else

{

result = "没有要导出的数据";

}

catch (Exception ex)

{

result = "导出失败！";

}

return result;

}

/// <summary>

/// Excel文件保存到服务器 Excel文件版本：office 2007

/// </summary>

/// <param name="dt">数据表</param>

/// <param name="fileName">服务器端文件名称</param>

/// <param name="filePath">服务器端文件路径</param>

/// <param name="columnName">表头</param>

/// <param name="insertColumnIdnex">插入空列索引</param>

private void SaveFile(System.Data.DataTable dt, string fileName, string filePath, string[] columnName = null)

{

Application app = null;

Workbook wb = null;

Worksheet sheet = null;

try {

string[] field = { "Alias", "dxx", "dxq", "dxc", "dxm", "ylx", "ylq", "ylc", "ylm", "dkx", "dkq", "dkc", "dkm" };

app = new Application();

app.Visible = false;

wb = (Workbook)app.Workbooks.Add(Missing.Value);

sheet = (Worksheet)wb.ActiveSheet;

DataTable result = dt;

if (columnName != null && columnName.Length > 0)

{ for (int i = 0; i < columnName.Length; i++)

{

string a = columnName[i].ToString();

sheet.Cells[1, i + 1].Value2 = columnName[i];

}

//内容填充

for (int j = 0; j < result.Rows.Count; j++)

{

sheet.Cells[j + 2, 1].Value2 = j + 1;

for (int k = 0; k < field.Length; k++)

{

string datavalue = "";

datavalue = result.Rows[j][field[k]].ToString();

sheet.Cells[j + 2, k + 2].Value2 = datavalue;

}

//设置Sheet整体样式

sheet.Columns.EntireColumn.AutoFit();

sheet.Cells.HorizontalAlignment = XlHAlign.xlHAlignLeft;

sheet.Rows.RowHeight = 18;

//设置标题信息

Range ran;

ran = sheet.Range[sheet.Cells[1, 1], sheet.Cells[1, columnName.Length + 1]];

//取得区域

ran.Font.Bold = FontStyle.Bold;

ran.Rows.RowHeight = 30;

wb.Saved = true;

if (!Directory.Exists(filePath))

Directory.CreateDirectory(filePath);

DirectoryInfo dinfo = new DirectoryInfo(filePath);

dinfo.Attributes = FileAttributes.Normal;

string fileInfo = String.Format("{0}{1}", filePath, fileName);

if (File.Exists(fileInfo))

File.Delete(fileInfo);

app.ActiveWorkbook.SaveCopyAs(fileInfo);

}

catch (Exception ex)

{

}

finally

{

wb.Close(null, null, null);

app.Workbooks.Close();

app.Quit();

Marshal.ReleaseComObject((object)app);

Marshal.ReleaseComObject((object)wb);

Marshal.ReleaseComObject((object)sheet);

GC.Collect();

}

/// <summary>

///

/// </summary>

/// <param name="context"></param>

/// <param name="xlsfile"></param>

private void ExportToExcel(HttpContext context, string xlsfile)

{

System.IO.FileInfo file = new System.IO.FileInfo(xlsfile);

context.Response.Clear();

context.Response.Charset = "GB2312";

context.Response.ContentEncoding = System.Text.Encoding.UTF8;

// 添加头信息，为"文件下载/另存为"对话框指定默认文件名

context.Response.AddHeader("Content-Disposition", "attachment; filename=" + context.Server.UrlEncode(file.Name));

// 添加头信息，指定文件大小，让浏览器能够显示下载进度

context.Response.AddHeader("Content-Length", file.Length.ToString());

// 指定返回的是一个不能被客户端读取的流，必须被下载

context.Response.ContentType = "application/ms-excel";

// 把文件流发送到客户端

context.Response.WriteFile(file.FullName);

// 停止页面的执行

context.Response.End();

}

#endregion

c# 导出数据

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原文地址：http://www.cnblogs.com/lk516924/p/5504488.html

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